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Chapter 4
Visco
Twin_002 EN
Page 4-2
4.3.1 Tightening torques for specified components
Tightening torques has been specified for certain components as shown in the table below:
Designation
Screw
∅
Tightening torque
Fitting screws 2259 of the seal housing
M8
10 Nm
Gear case cylinder head screws 2258
M8
20 Nm
Gearwheel hub cylinder head screws 2186
M5
8 Nm
Driven shaft hexagon screw 2177
M12
80 Nm
Cover hexagon screw 1041
M16
150 Nm
Spindle screw 2180
M16
150 Nm
Pump casing hexagon screw 1016
M16
150 Nm
Pump foot mounting
M10
44 Nm
Gear housing screws
M8
20 Nm
Groove nut
M35
70 Nm
Groove nut
M45
90 Nm
4.4
Pipe lines
Correct dimensioning of the pressure-side pipe line is crucial to avoid unnecessary pressure build up
when delivering viscous media. Therefore, orient yourself at least by the dimensions of the pump
flanges. The pressure stated in the data sheet must not be exceeded.
Mind the delivery pressure stated in the data sheet with respect to the pipe line pressure resistivity.
Purge the piping system and the feeding devices and clean them from foreign objects.
Seal pipe connections for quench exclusively with a sealing tape. Do not use liquid seals. Liquid seal
can clog the inner flushing lines.
Possible damage to property
•
Do not use liquid seals.
•
Liquid seal can clog the inner flushing lines.
4.4.1 Connection of the pipe lines
1. Clean and purge the pipes.
2. Flange the pump to the pipe line via elastic seals so that a tight connection develops and no
undue forces act on the pumps.
3. Provide shut-off devices for removing the pump and maintenance and fitting pieces in the
pressure and suction lines.
4. Provide safety valve or pressure monitoring right into the pipe line behind the pump.
ATTENTION
Manual ViscoTwin 104-xx 3A